74F161ASJ

Overview

The Fairchild Semiconductor 74F161ASJ is a high-speed synchronous modulo-16 binary counter belonging to the 74F logic family. It features a 4-bit up-counting architecture with positive edge triggering and synchronous preset capability. The device operates within a supply voltage range of 4.5 V to 5.5 V and exhibits a typical propagation delay of 10 ns. Designed for surface-mount applications, it is housed in a 16-SOP package and supports operation across a commercial temperature range of 0°C to +70°C.

Feature Summary

• Synchronous counting and loading mechanism
• High-speed synchronous expansion capabilities
• Positive edge-triggered operation

Applications

• Programmable counter circuits
• Digital timing systems
• Frequency division networks

Procurement Notes

Verify component authenticity through official manufacturer channels or authorized distributors. Confirm RoHS compliance status and check for lead-free markings on the package. Ensure storage conditions adhere to moisture sensitivity level requirements to prevent damage prior to assembly.

Selection Notes

Select this component for designs requiring fast synchronous binary counting in standard TTL-compatible environments. Verify that the 16-SOP package fits the PCB footprint constraints. Ensure the operating voltage remains strictly within the 4.5 V to 5.5 V range to maintain specified performance metrics.

Part Context

This part belongs to the 74F series of logic integrated circuits, known for high-speed bipolar technology. It serves as a fundamental building block for digital state machines and sequential logic control systems. The 74F161A variant specifically provides synchronous preset functionality for flexible count initialization.

Replacement Considerations

Public confirmed substitute part numbers include SN74F163AD and SN74F163ADR from Texas Instruments.